Concept 41 -...

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Concept 18.4 A program of differential gene expression leads to the different cell types in a  multicellular organism. In the development of most multicellular organisms, a single-celled zygote gives rise to cells of  many different types. Each type has a different structure and corresponding function. Cells of different types are organized into tissues, tissues into organs, organs into organ  systems, and organ systems into the whole organism. Thus, the process of embryonic development must give rise not only to cells of different types  but also to higher-level structures arranged in a particular way in three dimensions. A genetic program is expressed during embryonic development. As a zygote develops into an adult organism, its transformation results from three interrelated  processes: cell division, cell differentiation, and morphogenesis. Through a succession of mitotic cell divisions, the zygote gives rise to a large number of cells.
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This note was uploaded on 01/04/2012 for the course BSC BSC1005 taught by Professor Orlando,rebecca during the Fall '10 term at Broward College.

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Concept 41 -...

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